Home / 491,467.14-678,246.48-276,621.12

Finding the Fourth Proportional to 491,467.14, 678,246.48 and 276,621.12

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Solution

The fourth proportional to 491,467.14, 678,246.48 and 276,621.12 is: 381,749.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,467.14 : 678,246.48 = 276,621.12 : x
  2. Step 2: Convert to fraction form
    491,467.14/678,246.48 = 276,621.12/x
  3. Step 3: Cross multiply
    491,467.14x = 678,246.48 × 276,621.12
  4. Step 4: Simplify right side
    491,467.14x = 187,617,300,933.66
  5. Step 5: Solve for x
    x = 187,617,300,933.66/491,467.14
  6. Step 6: Final answer
    x = 381,749.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.